Keyboard perforator



R. A. LAKE 2,391,056

KEYBOARD PERFORATOR Filed Feb. 22, 1943 4 Sheets-Sheet 1 Dec. 13,1945.

4 sheets-sheet R. A. LAKE KEYBOARD PERFORATOR Filed Feb. 22, 194s FIG. 5

Dec. 18, 1945.

INVENTOR .BK/ u AT RNEY ROSS A. LAKE Dec. 18, 1945. R. A. LAKE 2,391,056

' KEYBOARD PERFoRAToR Filed Feb. 22, -1943 4 Sheets-Sheet 3 es mvENToRROSS A. LAKE n I l BY y 1' JM WLM ATT NEY Dec. 18, 1945. R. A. LAKE2,391?056 KEYBOARD PERFORATOR Filed Feb. 22, 1943 A Sheets-Sheet 4,lllllllfi IY" Mim,

WHHIHIIIIIHII IN\v/ENTOR Ross A. LAKE Patented Dec. 18, 1945 UNITEDSTATES lPATENT OFFICE KEYBOARD PERFORTOR Ross A. Lake, Oak Park,`Ill.,assigner to Teletype Corporation, Chicago, Ill., a corporation lofDelaware Application February 22, 1943, Serial No. 476,693

Claims.

by manual or tape control, which may be either local or distant.Specifically, the control indicia may be in the formy of transverse rowsof per- 'forations formed in a tape either by a keyboard perforator orby a. signal controlled perforator which is commonly referred to as areperforator. The tape thus prepared, to control correspondingly thetransmission in succession of Iimpulses identied with the perforations,passes through a transmitter or sensing mechanism, which has its tapeentrance channel separated from the tape exit channel of the perforator.Under such conditions, a short length of tape extends between theperforator and the transmitter and contains a group of perforations,whose last character perforated is not sensed unless the tape isadvanced to present such group of periorations vto the transmitter orunless the sensing mechanism is made movable along the control strip tosense the last control indicia and effect transmission of itscorresponding signal impulses, as disclosed in Patent No. 2,252,012,granted November 11, 1941 to R. A. Lake.

The principal object of the present invention is to provide a codeperforating apparatus wherein the perforating mechanism is susceptiblecf 4with a tape sensing mechanism including a plurality of sensingfingers set permutably in -accorda-nce. with the perforations or controlindicia in a; previously prepared control strip to control thetransmission off impulses symbolic of the characters to'be reproduced.,The perforator to which code allocated to a depressed key lever.

the invention has been specically applied comprises a plurality of keylevers arranged to set permutably a plurality of bars which, in turn,set correspondingly a plurality of interponents to control, upon theoperation of a mechanically operated punch hammer, the operation ofpunches arranged in a transverse row to perforate the control strip inaccordance with the The perferating instrumentalities of the perforatingdevice according to this invention are arranged to be pivoted so thatthe perforating punches may be advanced toward the transmitting devicein order that the last code perforated may be immediately transmitted bythe transmitting device.

Cooperating with the code punches is a feed hole punch for inserting inthe tape in advance of the code perforations a feed hole whichcooperates with a tape feeding mechanism of the perforating unit toadvance the tape therethrough step by step in order that the groups ofperforations therein may be punched successively.

The perforating mechanism includes, as previously indicated, punches orpunching elements which are mounted `in a carrier capable of oscillationabout a fixed pivot away from and toward the entrance channel of a tapetransmitter. Normally, the tape entrance channel of the sensing unit ofa transmitter is immediately adjacent or contiguous to the exit channelof the perforator and the tape passes directly from the perforato-r tothe sensing unit without any exposed portion of the tape. When theperforator is ope-rated, the tape feed mechanism thereof advances thetape and causes the perforating unit to be pushed or pivoted a distanceequal to the distance between the transverse rows of perforations, thusstarting 'a transmitting distributor which includes means to move thetape in the sensing unit, but since the tape may be perforated at agreater rate of speed than it is transmitted, the perforator is pivotedaway from the sensing mechanism until it reaches a predetermined backstop, whereupon a loop of tape vis created between the perforator andthe transmitter. When'the perforating operations are terminated land aloopof tape exists between the perforator and the transmitter, thetransmitter continues to transmit the signals under the control of thetape while the tape is advanced through the transmitter until the tapeis taut between the transmitter and perforator whereupon the tape drawsor\pulls the perforator toward the transmitter until the perforator isagain contiguous to the' transmitting mechanism,

and when the last signal perforated in the tape has been transmitted,transmission will cease automatically.

A feature of the present invention consists in providing in the tapeperforating mechanism of the pivoted type, 'a novel back spacing mecha.-nism of the rectilinear (as described in Lake Patent No. 2,262,012)type. Heretofore, as shown in the aforementioned Lake patent, the tapefeeding operation has been performed through the instrumentality of aso-called reciprocatory pivoted or rectilinear feed mechanism. Thesignification of rectilinear herein is as embraced in the aforesaid U.S. Patent No. 2,262,012. The tape advancing mechanism shown inthe Lakepatent includes elements operated cyclically under the control of cams,constituting a part of the transmitting cam distributor drum, accordingto a rectilinear action. In the perforating device, ac. cording to thepresent invention, a corresponding rectilinear action is provided foradvancing the tape through the perforator: In addition to this, areversing mechanism is provided wherein the tape feeding cams areadjusted so as to operate the rectilinear operating mechanism in-areverse direction to back space the tape through vthe perforatingdevice. Y Y

A better understanding of the invention may be had from the followingdescription taken in conjunction with the accompanying drawings,

wherein, Y

Fig. 1 is a front elevational rview, partly insection, of the structureaccording to the invention;

Fig. 2 is a fragmentary elevational view showing the pivoted perforatorof the present invention associated with the pivoted transmitter of LakePatent No. 2,262,012;

Fig. 3 is a plan view of the in Fig. 1;

Fig. 4 is a sectional view taken on line 4-4 of Fig. 1 to show the backspace shift mechanism;

Fig. 5`is a top View of the rectilinear feed operating mechanism; Y

Fig. 6 is a sectional view taken on line 6-6 of Fig. 1;

Fig. '7 is a sectional view taken on line 1-1 of Fig. 1;

Fig. 8 is a sectional View taken on line 8-8 of Fig. l;

Fig. 9 is a vertical sectional view taken through the feed punchmechanism;

Fig. 10 is a detailed view of the taut tape lever for the feed-holepunch mechanism;

Fig. 11 is a vertical sectional view of the rectilinear feed operatingmechanism;

Figs. 12 and 13 are separate views showing the component elements of therectilinear feed mechanism and the operating cams therefor;

Fig. 14 is a vertical sectional view of the perforating mechanism; and

Fig. 15 is a circuit diagram of the electrical connections for theapparatus disclosed in Fig. 1.

Having reference to Fig. 1, the structure according to the presentinvention may be considered as including the following principal units;namely, a pre-punch feed hole mechanism 2l, a pivoted perforator 22 forperforating code holes in transverse rows on the record strip, a tapesensing unit 23, and a transmitting unit 24. Each of the sev.. eralunits is mounted on a base casting 25. In the specific embodiment of theinvention disclosed, the perforating mechanism is indicated as beingkeyboard operated or controlled. The keyboard mechanism employed is ofvthe type structure disclosed shown in R. A. Lake et al. Patent No.1,969,891 and comprises a plurality of key levers 26 provided at theiroutward extremities with keytops 21 arranged in a key bank.

Beneath the key levers 26 is arranged a series of pairs of code bars 28adapted to be operated vertically so that when, upon depression of a keylever 26, one of the key bars .2,8 of the pair will be depressed whileits companion bar will be raised or elevated. Associated with each ofthe pairs of bars 28 and carried on a pivot shaft 3l is a rocker member29 which is arranged to cooperate with the bars 28, as described in theaforementioned Lake et al. patent, so that the rocker arms' 29 will berocked either clockwise or counterclockwise by the bars 26, dependingupon the permutation code allotted to the particular key lever operated.Pivotally articulated to the depending arm of the rocker member 29 (ofwhich there is one located at each end of the bar 28) is a link member32. Each of the link members 32 extends leftwardly (as in Fig. 1) beyondthe rocker member 29, and is pivotally articulated to the lower end of apunch interponent operating lever 33, which is one of a series of leverspivoted on a shaft 34, suitably journaled in the apparatus. It isunderstood, of course, that there are a number of pairs of bars 28corresponding to the permutation code employed; for example, inthepresent disclosure a five-unit vpermutation code is contemplated.Hence, there are ve pairs of permutation code bars 28 and ve links 32,as well as five interponent operating levers 33. As disclosedin theaforementioned B.. A. Lake et a1. Patent No. 1,969,891, there is alsoassociated with the plurality of code bars 28 a universal bar (notshown) which is adaptedtobe depressed or operated upon eachrdepressionof Athe key lever 26 to initiate the operation of theperforating appa.-

'ratus, as will presently appear,

Each of the levers 33is pivotally associated at its upper end with aninterponent memiber 35 which is slidably carried inthe actuating memberor hammer 36 pivotally carried on shaft 31. As shown in Figs. 6 and 14,the hammer 36 is actuated about the pivot shaft 31 by means of theoperating lever 38 which is also pivotally mounted on the shaft 31' andwhich is adjustably attached to the hammer 36 through theinstrumentality of the vertical portion 39 (Fig. 6). Arm 38 carries afollower roller 4I which cooperates with the perforator operating cam42, carried'on a sleeve member 123 mounted on main shaft 43. It will benoted that the' cam 42 has two similar cam contours so that theperforator is operated once for each one-half revolution of the cam. Aswill be presentlydescribed, the structure herein disclosed is adapted tooperate in such a. manner that the cam rotates one-half revolution uponeach depression of the key lever, hence the two similar cam contours oneach cam. The follower roller 4l is held in contactwith the periphery oithe cam 42 by means of a spring 44 which tends to bias the lever 38normally in a clockwise direc tion. i

Each interponent 35 is, at its free end, adapted to cooperate with thebottom end of an associated punch member 45 (Figsrl, 11 and 14). As willpresently appear, the bottom end of the punch .member 45 whichcooperates with the interponent 35 is arcuate so that the point ofcontact between the punch member' 45 and the interponent 35 iscoincident with-the pivot center of the pivoted perforator 22. 'I'herelation between the guide 46 and punch member 45 is such that the punchmembers 45 are held in proper cooperative relation with interponents 35.The punch members t are reciprocated vertically, and are conformed toslide on guide members 46. Each of the punch members l5 is provided atits upper end with a cylindrical punch element 41, which is movablethrough an opening in a guide plate 48 and coperates with a dieplate 49.The plates 48 and 49 are spaced apart to form a tape guide for the tape5|.

Thus, upon the operation of a key lever 26, the permutation bars' 28 areset according to the permutation code combination allotted to theoperated key lever, and the rocker arms 29 are operdescribed in the R..A. Lake et al. Patent No.

1,969,891, whereupon the links 32 arev'reciprocated rightwardly orleftwardly to correspond with the code combination set up in the bars2B. The levers 33 are set either in a clockwise or counterclockwiseposition by the links 32 to set or position the interponents 35 in theirrightward or leftward positions, bringing the left end of theinter-ponente either into the path of or out of the path of thevertically operating punch members |55, so that when the punch hammer oractuating member 35 is operated through the instrumentality of cam 2 andlever 33 (Fig. 14), the interponents 35 are rocked clockwise (as viewedin Fig. to raise the punch members 45, if an interponent is positionedtherebeneath, to cause a perforation to be made in the tape 5|.

Secured to the bottom surface of punch actuating member 36 is a springmember 36 which is formed at its free end to carry a yoke member 40which spans projections 50 of the punch members d5. Yoke member 0 thusserves as a yieldable punch stripping instrumentality. Carried in themember beneath each interponent 35 is a ball 6e which cooperates with apair of V- shaped notches in the bottom edge of its associatedinterponent. The balls 60 are pressed against the interponents by thespring member 39 to provide a detent means to hold the interponents 35in their set position.

As previously mentioned, the structure disclosed comprises a pre-punchmechanism 2| wherein the feed holes are punched in the tape 5| at apoint in advance of the code-hole perforator 22. As shown in Fig, 9, afeed-hole punch 52 is partially enclosed in a housing 53 which vconcealsa spring 54 arranged to subject punch 52 to spring tension to restore itto its normal r position. Punch 52 is guided in 'housing 53 by enlargedintegral flange portion 55 and is further guided in guide plate 56 andcooperates with a die plate 51. In the embodiment disclosed, the feedpunch 52 is operated through the instrumentality of an, adjustable screw58, disposed in vertical alignment with punch 52 and carried in a bar 59pivoted at Si on a member 52. As viewed in Fig. 7, bar 59 extendsrightwardly and has connected at its extremity one end of a spring 63,the other end of which is secured to a spring post 64, attached to theframe 35. Substantially intermediate the screw 58 and spring 53 (Fig.'1) is a yoke member 66 which'y engages the bar 59 and is slidablevertically on studs 5! land* 68. Yoke member 55 cooperatesv with aneccentric cam 69 fixed to an operating shaft 1| journaled in frame 65.

Shaft 1| rotates continuously and carries at its end a gear 12 (Fig. 3),which meshes with a pinlon gear 13 fixed to a cross shaft 14,journaled'in bearings 15 and 16 mounted on thebase 25. Continuousrotation .is'imparted to thecross shaft 14 through a gear l11 which ismeshed with a pinion gear .1B carried on shaft 19 of va .motor 8|. Ac-

cordingly, theyoke memberv 66 reciprocates Vertically in a continuousmanner, and carried on the yoke member 66 is a tape feeding'pawl 82which cooperates with a feed ratchet 83 fixed to Vshaft 8d mountedV inthe frame 65. In the pres- 89 so that upon each upward movement of `theyoke 55, the ratchet 83 (and therefore, sleeve vile.) is rotated.counter-clockwise, as viewed in Fig. Lone angular step to thereby stepthe tape leftwardly from one perforating position to the next.v Also xedto the sleeve 95 is a star wheel 89, and cooperating therewith is Aa'detent member 9| which is spring biased in a counterclockwisedirection, by a spring 92 about a shaft 93.

As previously mentioned, the. production of feed holes in the tape iscontinuous since the shaft 1| has been indicated as continuouslyrotating. However, to prevent too great an amount of tape from beingperforated with feed holes in the event that the perforation of codeholes is not keeping pace therewith, the' control device shown in Fig.10 is provided. Having reference to Figs. 1, 3, '7, and l0, there isloosely mounted on the shaft 61,

. a, lever, generally indicated as 94, which com- As shown in Fig. 1,the tape 5|, after passing 59, as shown'in Fig. 1.

over the sleeve or feed roller 85, is directed downwardly underneath thelateral portion 96, then upwardly toward the code per-forator 22. As theloop of tape is formedl between the feed hole punch and the codeholepunch, the lever 94 is permitted t'o rotate in a counterclockwisedirection, thus bringing the 'shouldered portion of extension 91 intolatching engagement with the bar When this relation.y between lever 94and bar 59 exists, the bar 59 and yoke 66 can no longerv respond to thepull of spring 63 and thus the reciprocal movement of the yoke 66 issuspended or prevented. Then when the loop of tape is taken up, and thetape becomes taut, the lever 94 Will be rotated by the tape in aclockwise direction about the shaft 61, so that the extension 91 becomesdisengaged from the bar 59, thereby permitting further recipro cation ofthe yoke 66 and consequent perforation of feed holes in the tape. Alever arm 98 is also pivotally mounted on shaft 61 and is provided witha cam portion 99 which acts, upon counterclockwise rotation of lever 98,to cam or raise bar 59 upwardly, causing bar 59 to pivot about the pin6| for the purpose of manually suppressing the operation of bar 59.

According to the present invention, the perforator unit 22, aspreviously mentioned, is pivoted. The perforator unit (Fig. 6) includestwo frame members |01 and |02, pivoted on pivot pins |03 and |04 (Fig.3) in a manner to permit free oscillation of the perforator unit. Pins|03 and |04 are secured in bracket |05 mounted on base 25, and cooperatewith lateral portions |06 and |01 of frame members |0| and |02. As shownin Figs,

1,3, and 6, the frame members and |02 are joined together near theirupper edge by a U- shaped member |08 which is attached to members |0|and |02 by screws |09 (Fig. 6). Carried jointly by frame members |0| and|02 are the die plate 49 and the punch guide plate 48.

Secured to plate 49 by a screw is a reed spring which carries at itsfree end two pins ||2 and ||3 (Fig. 2) which cooperates with therectilinear feed mechanism, as will appear hereinafter. Within the spaceformed by the metallic spacer |08, is a slidably movable member 4 whichis formed with a cam groove ||5 (Figs. 1 and 12) and which carries onits upperextremof the same length, but pin ||1 is considerably longerthan pins ||6 and ||8, the purpose of which will appear more clearlyhereinafter. Cooperating with the cam groove ||5 is a pin ||9, securedto the free end (Fig. 13) of arm |2| art-iculated on cam operated leverarm |52. Pin ||9 extends from both sides of arm |2|, a length sufficientto permit it to travel in vertical slots |22 in the member |08 (Figs. 1,11, and 12).

As will be described more fully hereinaften. member 4 and arm |2| areoperated in timed relation. Arm |2| is drawn upwardly in the slots |22.and when so drawn and due to the particular shape of cam groove ||5,member ||4 will be moved to the left (as viewed in Figs. 1, 11, and 14)and relative movement between'the punch elements and the tape 5| will beeffected. Member ||4 then is moved downwardly to withdraw pins I |6,||1, and ||8 from engagement with the feed perforations alreadyperforated in the tape .5|. y

Following this action, arm |2| is moved downwardly, and due to theafore-mentioned camming action betweenpin ||9and groove V||5, member |4is moved rightwardly. The member ||4 is thereafter elevated to cause thepins ||6,

||1, and ||8 to engage other feed perforations in the tape 5| toachieve, on a subsequent cycle, relative movement between theperforating elements 45 and the perforated tape 5|.

Mounted on shaft 43 and slidable with respect thereto in an axialdirection is a cam sleeve |23 (Fig. 4). The, afore-mentioned cam 42(Fig. 14) for operating the punch hammer 36 is integrally associatedwith sleeve |23. ,Moreoven a series of cams |26, |21, |28, and |29,identied'with the rectilinear feed mechanism of the pivoted perforatingunit are also integrally associated with the cam sleeve |23. Cams |26and |21, as more clearly shown in Fig. 12, are associated with the arm||4 of the rectilinear feed mechanism, and cams |28 and |29 areassociated with the arm I2 I, as shown inFig. 13.

As previously mentioned, the electric motor 8| has on its shaft a piniongear 18 which meshes with a gear 11 fixed to a cross shaft 14- Shaft 14has fixed thereon a pinion 3| which meshes with a gear |32 xed to shaft43 associated with the perforating mechanism.

Shaft 43 carries thereon, adjacent the clutch trip mechanism indicatedgenerally as |33 in Figs. 1 and 3, a combination switch and positiveclutch (not shown) of the type and construction illustrated in Figs. 5.and 7 of the aforementioned Lake Patent No. 2,262,012. Upon depressionof any of the key levers 26, the code bars 28 will be operated, as willbe the universal bar (not shown) to effect the operation of the clutchrelease mechanism |33. For example, upon the depression 4of theuniversal bar, a link |34 connected thereto is operated rightwardlyagainst the tension of a Aspring |35 to cause the counterclockwiserotation of a bellcrank |36. The counterclockwise rotation of bell crank|36 causes a link |31 to be elevated to cause the counterclockwiserotation of elements |38 and |40 of the clutch release mechanism |33about shaft |39. In this manner, `the stop projection on element |38 isremoved from the path of a spring operated latch 4| to` effect theapplication of power, through the frictionand positive clutch mechanism,to the cam sleeve |23. The form of clutch release mechanism shown hereincorresponds to that disclosed in Patent No. 2,019,505 to A. H. Reiber ofNovember 5, 1935, and consequently reference may be had to such patentfor a full and complete understanding of the construction and operationof the release mechanism which is operated by the universal bar upon thedepression of any of the key levers 26.

As set forth in said Reiber patent, the clutch release mechanism |33 isnormally `operative through link |31 to effect a single operative cycle,and hence is called a non-repeat clutch release mechanism. Briefly, thisis achieved by the offset relation of the confronting stop shoulders onelements 38 and 40, so that in the event a key lever is held depressed,the shoulder on element |40 will be effective upon latch |4| to arrestrotation after one cycle. Another feature of the present invention is toprovide a means for causing repetition of the operating cycle. 'I'his isaccomplished through the instrumentality of a link 235 associated withthe repeat key (not shown), which, when operated, causes the link 235 tobe operated rightwardly against the tension of a spring 236 to causecounterclockwise rotation of a bell crank 231. The counterclockwiserotation of bell y crank 231 causes a link 238 to be elevated to causethe clockwise rotation of element |40 to hold the shoulder thereon outof operative relation with the element I4 To effect a repeat operation,the links |31 and 38 are caused to be elevated simultaneously, either byoperating two keys concurrently; namely. a character key and the repeatkey; or if desired, bell crank 231 and a bell crank with its link,comparable to bell crank |36 with its link |31, may both be connected tolink 235 so that both elements |38 and |40 are operated by a single key.

According to the present invention, a rectilinear feed means isprovidedv in which forward spacing of the tape is controlled by a pairof cams |21 and |29, and back spacing of the rectilinear feed mechanismis effected through the instrumentality of a pair of cams |26 and |28,provision being made for shifting the cam sleeve |23 manually by meansof a shift bar |42, shown in Fig. 4. Shift bar |42 is guided forslidable operation in wall |43 of the frame and the pin |44, cooperatingwith the open slotted end of bal` |42. Bar |42 is provided with a pairof lugs |45 and |46 which straddle a disc |41 integral with sleeve |23.Thus, as the bar |42 is reciprocated rightwardly and leftwardly asviewed in Fig. 4, the cam sleeve, through the articulation of lugs |45and |46 with the disc or ange |41, will cause the sleeve |23 to bereciprocated correspondingly.

Assuming that the bar |42 is in its leftward p0- sition, as viewed inFig. 4, to effect forward spacing of the tape, cams |21 and |29 willcooperate .With follower levers |48 and |49, respectively (Figs. 1, 12,and 13). Lever |48 is pivotally mounted on shaft 31 and is adjustablyconnected to a lever arm |5| also pivotally mounted on the shaft 31(Figs. 5 and 12). Pivotally articulated to-the arm |I at its free end isthe rectilinear feed member ||4. l

. Likewise follower lever |49 is pivotally mounted on shaft 31 and isadjustably connected to a lever arm I52 also pivotally mounted on shaft31 (Figs. 5 and 13). Pivotally carried at the free end of arm |52 is theafore-mentioned operating lever I2| of the rectilinear feed mechanism. 1

Lever |48 is normally biased counterclockwise by a spring.A |58 (Fig.12) to hold its arm |59 against an adjustable stop |60. Likewise, lever|49 is normally biased counterclockwise by a spring |18 (Fig. 13) tohold its arm |19 against an adjustable stop |80. With this-arrangement,the stops and |80 are so adjusted as toprovide aA slight clearancebetween follower levers |48 and |49 and their respective pairs of cams,when said cams` are in their rest or normal stop positions, as shown inFigs. 1, 12, and 13, to permit the cam sleeve |23 to be readily shiftedto control forward and backward spacing lof the tape 5I, as will appearhereinafter.

As previously mentioned, the cams on shaft 43 are each provided with twosimilar cam peripheries, sincethe cam sleeve is arranged to makeone-half revolution for each complete'cycle of operation of theperforator 22. Therefore, during each one-half revolution of cam sleeveI 23, a perforating operation is completed, followed in the same cycleby a single tape stepping operation of the rectilinear feed mechanism.As indicated in the drawings, the cams are 'shown in their stopposition.l Having reference to Fig.- 11, the tape feed element |I'4 oftherectilinear feed mechanism is shown in itsnormal stop position.

The tape feed member II4 normally is`held in its position shown in Fig.'11, wherein the member I I4 is in its withdrawn position; that is, withthe pins II6, II1, and |I8 withdrawn from the tape and'with the memberkI I4 in its rightward position. For forward feeding or stepping of thetape 5 I, the tape feed member I |4 is rst elevated to bring the' pins|I6 and II 8 into engagement with the feed holes in the tape and at thesame time pin I|1 operates to lift the detent member I II. The member II4 is then'operated leftwardly in its elevated position to advance thetape one space, whereafter it is lowered to bring the pins out. ofengagement with the tape, and then the member II4 is moved rightwardlyin its lowered position back to the normal position shown in Fig. 11. Aspreviously mentioned, the members II4 and I2| are operated in timedrelation for forward spacing by cams |21 and |29. Also, the members I|4land I2| are operated in timed relation for back spacing by cams |28 and|28, as will hereinafter appear.

Die plate 49 and guide plate 48 are each provided with aligned openended slots |53 (Fig. 3) within which the rectilinear tape feedingmember I I4 is operative. The plates 48 andv49 are flared at theentrance end |54 to facilitate admission of the tape 5| (Fig. 1).Secured to plate 4,9 by a screw is a reed spring I I which'carries atits free end two pins I2 and I I3, Fig, 1, which align vertically withpins I6 and I I8, respectively, when the member ||4 is in its rightwardposition. As previously mentioned, pins I|6 and |I8 are of the samelength and cooperate with Ypins II2 and II3. As disclosed in Figs. 1 and1l, pin ||1 is substantially longer than pins II 6 and |I8. and thuswill engage the under surface of reed spring III and move it :about itspivot to free pins II2 and II3 from thefeed perforations in tape 5|. PinII1 having engaged .a feedperforation. prior tothe engagement of pins||6 and II8 with feed perforations and prior to the disengagement ofpins I|2 and I I3 from the feed perforations, tape 5| will be heldagainst accidental displacement l and will be Imaintained in properalignment with the punch elements 41. Also, when member II4 is loweredand pins ||6 and II8 are moved free of feed perforations in the tape,and prior to the engagement of pins I I2 and I I 3 with the feedperforations corresponding to those previously engaged by pins II2 and II3, respectively, pin II1 will-prevent the displacement of tape 5I. Sucha construction insures also that the feed perforations will not 1bemutilated, and also insures that the tape will .be properly spacedbetween successive code perforations to enable the transmission ofsignals corresponding to the setting of the punch elements 41.

The withdrawal of pins H6, |I1, and II8 from the feed perforations, theupward stroke of arm I2`I, and the reinsertion of pins II6, II1, and II8 in feed perforations are achieved by their respective cams during theperforation of the holes in accordance with the code combination ofimpulses indicative of the setting of the punch elements 41.`

Since the rectilinear action is substantially the same as that disclosedin Lake Patent No. 2,262,012, reference may be had to Figs. 9 to 12,inclusive, of said patent for-a disclosure of the various positions. ofthe rectilinear feed mechanism through-which the perforated tape isadvanced. Specifically, starting from the normal position of arm II4,which is the downward and rightward position as shown in- Fig. 11, armII4 is moved, for forward spacing, upwardly by its cam |21 (represented-by that portion. of the cam periphery between points I6I and |62, Fig.12) to bring pins II6, II1, and II8 into engagement with the feed holesin tape 5I (Fig. 1) and to raise reed spring III to withdraw pins I I2and II3 from the tape. During this interval, cam |29 (Fig. 13) has movedfrom point |63 to |64 to raise (through arm I2I) pin II9 a slightdistance in cam groove vI|5 in arm 'I I4, but not yet suiiicient toimpart leftward movement to `arm II4. Thereafter, arm I4 remains in itsupward position while cam |21 continues its rotation, due to the dwellon said cam represented by that portion between points |62 and |65.During this latter interval, `cam |29 operates between points |64 andapproximately |66 to raise pin II9 upwardly, which operates in camgroove II5 to actuate arm II4 leftwardly to move the tape 5I forwardly(leftward, 55 as viewed in Fig. 11). Then, as cam I 21 completes itshalf revolution indicative of a cycle of operation, a drop-off on theperiphery of the cam is'encountered at |65 by follower lever |48 toeffect a downward movement of arm II4 and o-'a'consequent withdrawal ofpins IIS, lI1, and I I8 from the tape 5I. Finally, shortly after saidwithdrawal has been effected, arm |49 encounters the" drop-off on theperiphery of cam |29 at |66 to cause the downward movement of pin IIS,which, coacting with cam groove I|5, causes arm I|4 to move rightwardlyto return to its normal downward and rightward position, as shown inFig. 111. Thus it is seen how,kthrough the instrumentality of cams |21and |29 the rec- 70 tilinear feed action is accomplished to effect theforward motion of the tape 5 I.

According to the'present invention, the backward spacing'of the tape isalso accomplished with the, present rectilinear feed mechanism. As

previously described, a bar |42 .,(Figs. 1 and 4) is tent roller |94 iscarried on a reed r|95, attached to member |8| and cooperates with feedratchet |92 in well-known manner.

Cooperating with ratchet wheel |92 is a feed pawl |96 (Figs. 1 and 8)which is pivotally attached to the horizontal arm of a bell crank lever|91 mounted on a pivot shaft |98. The depending arm |99 of lever |91cooperates with a tape feed cam 20| (Fig. 3) integral with a cam sleeve202 operatively associated with the transmitting shaft 203. Pawl |96 isnormally biased into engagement with ratchet |92 by a spring 200.

The sensing elements or pins |81 are integral individually with acorresponding series of sensing fingers 204. The lower end of sensingfingers 204 are provided with open ended slots to straddle the shaft|82, whereby the sensing finger 204 is guided for verticalreciprocation. The sensing fingers 204 are also slotted in the sidethereof to accommodate the ends of the horizontal arms of a series ofbell crank levers 205, one individual to each sensing nger. Each of thebell crank levers 205 is provided with a depending arm 206 whichcooperates With the horizontal arm 201 of a bell crank lever 208 (Fig.1). Fastened near the end of each arm 206 of each bell crank lever 205is a retractile spring 209, which serves to rotate its respective bellcrank in a counterclockwise direction (as viewed in Fig. l) and to movethe associated sensing finger 204 vertically to cause the sensingelements |81 to sense the perforations in the tape If a perforation ispresented above a sensing element |81, the sensing finger movesvertically to its fullest extent, whereas if there is no perforation invertical alignment therewith, its upward movement is correspondinglyrestricted. The depending arms 206 of the bell crank levers 205cooperate with the slot in a pivotally mounted guide comb 2| Guide comb2| is normally under the tension of a spring 2 2, one end of which isfastened to a spring post 2|3 and the other secured to ears 2|4 (Figs. 1and 3). Stop screws 2|5 are provided in ears 2|4 to adjust the movementof comb 2||. Depending from the pivot shaft |98 is an arm 2|6, the lowerextremity of which fits into a slot in the comb member 2| l. Arm 228 isalso provided with a cam follower projection 251 which cooperates with acam 2|9 integral with the cam sleeve 202 (Fig. 3).

Comb member 2|| is normally biased in a, clockwise direction by springs2|2 which, acting through arm 2|6, hold cam follower 2|1 against theperiphery of cam 2|8. Comb member 2|| also acts under the tension ofsprings 2|2 to hold bell crank levers 205 in their clockwise position(shown in Fig. l) in blocking relation with arm 201 of transmittinglevers 2108, tensioning springs 209. Upon the rotation of cam 2|8, theapex thereon (not shown) coacts with a follower 2|1 to impartcounterclockwise rotation to armA be permitted to rise into the codeperforation, thus permitting the bell crank lever 205 to rotate apredetermined amount under the inuence of its spring 209 so that thedepending arm 200 is moved out of blocking relation with arm 2101 of thetransmitting lever 208. On the other hand, if no perforation is inregister with the tape sensing nger 204, that bell crank lever 205associated therewith will not be permitted to. rotate, and hence thedepending arm 206 thereof will remain in blocking relation with anassociated arm 201.

As previously mentioned, there is individual to each of the bell cranklevers 205 a bell crank lever 208, pivoted on a shaft 22| and held inproper spaced position by spacing Washers. Each bell crank 208 has ahook 222 at its uppelI end which engages the insulated upper end of thespring contact 223,Y and each of the latter cooperates with a contactspring 224, the pairs of contact springs being mounted upon, butinsulated from, a supporting bar 225 carried by the transmitter bracket226, mounted on the base 25.

Each spring contact 223 tends to engage its associated contact spring224, and also serves to hold a lug 221 on the horizontal arm 201 of thecorresponding bell cranklever 208 (when free to rotate counterclockwise)in engagement with the surface of an associated transmitting cam 228.Each of the cams 22B is provided with a recess 229, so that as therecess passes over the lug 221 the associated switch contacts 223 and224 will be closed, provided the horizontal arm of the bell crank lever208 is not restricted in its movement by the blocking arm 206. The cams228 are so mounted on the shaft 203 that the recesses 229 are arrangedin a helical series, so that as the cam sleeve 202 is rotated, the lugs221 and recesses 229 cooperate successively to ca use the contact 223and 224 to close sequentially.

Power is communicated to shaft 202 by the motor 8| which, as previouslydescribed, drives the cross shaft 14 through gears 11 and 18. Shaft 14carries a pinion gear 229 which meshes with a gear 23|, fixed to thetransmitting shaft 203. Gear 23| drives cam sleeve 202 through apositive clutch, indicated generally as 233, which is described indetail in the afore-mentioned Lake Patent No. 2,262,012, and to whichpatent reference may be had for a complete disclosure of this clutcharrangement. As mentioned in the latter patent, this clutch is of thesingle revolution type and is, controlled by an electromagnet 234. Asshown in Fig. 15, the winding of the clutch control magnet 234 is inseries with the contact |16 controlled by the pivoted perforator 22, sothat when the contacts |16 are closed, which occurs during the operativeperiod of the perforator 22, the magnet 234 will be energized to attractits armature to withdraw the clutch arm from the driven portion of thesingle revolution clutch 233, whereby the driven portion will be urgedtoward the driving portion to effect the rotation of the sleeve 202.Conversely, when the perforator 22 has ceased operating and has beenadvanced to the point |14 contiguous to the transmitting portion 23,contact |16 will be opened and the clutch release magnet 234 will bede-energized thereby releasing its armature and effecting the withdrawalof the driven por tion of the clutch 233 from the driving portion in themanner described in the afore-mentioned Lake Patent No. 2,262,012.

General operation diately adjacent t the entrance channel of theVtransmitter unit 23. Under such circumstances, contact |16 is opened andelectromagnet 234 is de-energized, which results in the arrestment ofcam sleeve 202. Also, the clutch controlled .by the clutch releasemechanism |33 for operating the shaft 43 of the perforating unit is alsoin itsv rest position preparatory to being released by the depression ofa key lever 26. .The condition of the feed hole punch unit 2l is suchthat the shaft 1| is constantly rotating, thereby reciprocating the bar66 to produce feed perforations in thetape until a loop of tape has beenformed whereby the lever 95 is rotated to its counterclockwise positionblocking further movement of the bar 59. Upon the operation of a keylever 26, the punch interponents 3.5 are set in a characteristic codecombination corresponding to the particular key lever depressed. Also,the ,clutch release mechanism |33 is operated to initiate one-halfrevolution of the cam sleeve |23 for the performance of one cycle ofoperation of the perforator 22. In response to the rotation of camsleeve |23 the perforator punch hammerl is operated by the mechanismshown in Fig. 14 to produce the perforations in the tape. Thereafter therectilinear feed mechanism is operated, as previously described, to stepthe tape forward one step. In so doing the tape causes the perforatorunit 22 to be pushed away from the transmitting unit 23 and to close thecontact |16. Then, the magnet 23d. will become energized and the clutch233 willbecome engaged to initiate the rotation of the transmitting camsleeve 202, whereupon the sensing ngers 204 will be operated to sensethe tape and to set the bell crank levers 205 in positions determined bywhether the sensing fingers find a perforation in the tape or not, thussetting the arm 206 in blocking or nonblockng relation with the arms 201of the transmitting levers 208. Then, as the cam sleeve 202 rotates, thecontacts 223 will be operated successively to transmit a series ofsignals over the line (Fig. 15) corresponding to the particular codecombination sensed in the tape.

It is understood that as soon as a row of perforations is perforated inthe tape as the perforator assumes the dotted line position |14, it isimmediately sensed by the sensing fingers 204 after the tape has beenadvanced one character space, since it is an object of the invention totransmit the last signal perforated in the tape. Since the perforator 22operates at a greater speed than the speed of transmission, theperforator 22 will advance toward the right or pivot to the positionshown at |15, whereafter, a loop of tape will be formed so that uponcessation of operation of the perforator, the transmitter will continueto operate until the pivoted perforator unit 22 has been pulled up tothe transmitting unit 23 to transmit the last character perforated inthe tape. whereupon the contact |16 will be opened to eiect thede-energization of the magnet 234 to stop transmission.

Modification In the embodiment of the invention already described, thetransmitting unit has been illustrated itY as being fixed. Of course,itis contemplated that a pivoted transmitter such as shown in the LakePatent No. 2,262,012 may besubstituted for the xed transmitting unit,shown in Fig. 1. 'Accordingly, inFig. 2Yis shown this combination,wherein a pivoted transmitter unit is employed in coniunction with thepivoted perforating unit 22 of the present invention.

Inthe event that the pivoted transmitter, as shown in said Lake patent,is substituted for the fixed transmitter or sensing unit 23, the pivotedunit is caused to be so mounted as to pivot about the point ofarticulation between the horizontal arm of the bell crank 205 and thesensing fingers 204 (which compares with the point of connection betweenthe sensing fingers |25 and bell crank horizontal arms |66 shown in Fig.1 of said Lake,

patent). The rectilinear feed mechanism for the transmitting unit willbe as shown in said Lake 'patent in Figs. 9 to 12 thereof, and operatingcams for this rectilinear feed movement will be added to the cam sleeveI202 in proper position in correspondence with similar positions shownin the Lake patent.

While the invention has been disclosed and described with reference to aparticular type of apparatus, it is obvious that it may be applied toother forms of apparatus without departing from the spirit and scope ofthe present invention. It is accordingly intended to cover allapplications of the present invention which come within the purview ofthe appended claims.

What is claimed is:

l. A perforating device comprising a plurality of punch elements forpunching control indicia in a strip, means for advancing said strip asan incident to the punching operation including a unitary memberengaging said strip, rotary means for positively operating said unitarymember rectilinearly, means to engage said strip and hold it temporarilyagainst displacement during a portion of the rectilinear operation ofsaid unitary member, and means to shift said rotary means to cause saidunitary member to be operated in a reverse manner to impart reversemovement to said strip.

2. A perforator comprising a plurality of elements for perforatingtransverse rows of control Y. indicia in a strip, a series ofinterponents, means for governing the permutable setting of saidinterponents, a cyclically operated perforating means cooperating withsaid elements for perforating transverse rows of permutation codeindicia in said strip as determined by the operation of saidinterponents, unidirectional means rotated in a continuous motion intimed relation with respect to said cyclically operated perforatingmeans, means for advancing said strip in uniform incremental amounts topresent an unperforated area to said punch elements including a unitarymemtermined by the operation of said interponents;

means rotated in timed relation with respect to said cyclically operatedperforating means, means for advancing said strip to present anunperforated area to said punch elements including a unitary memberengaging said strip, means ro-l tated by the means operated in timedrelation with said cyclically operated means for operating said unitarymember rectilinearly, and means for causing said rotated means toOperate said unitary member in a reverse rectilinear manner to backspace said strip. g

4. A perforating device comprising a plurality of punch elements forpunching control indicia in a strip, mechanism for advancing said stripas an incident to the punching operation including a unitary memberengaging said strip, means for facilitating the repeated operation ofsaid advancing means, rotary means for positively operating said unitarymember rectilinearly, means to engage said strip and hold it temporarilyagainst displacement during a portion of the rectilinear operation ofsaid unitary member, means to shift said rotary means to cause saidunitary member to be operated in a reverse manner to impart reversemovement to said strip, and means for operating said rst recited meansin a manner to effect repeated reverse stepwise movement of said strip.

5. A perforator comprising a plurality of elements for perforatingcontrol indicia in a strip, a series of interponents, a cyclicallyoperated perforating means cooperating with said elements forperforating indicia in said strip asv determined by the operation ofsaid interponents, means rotated in timed relation with respect to saidcyclically operated perforating means, means for advancing said strip topresent an unperforated area to said punch elements including a unitarymember engaging said strip, means rotated by the means operated in timedrelation with said cyclically operated means for operating said unitarymember rectilinearly, and single means dually eiiective on saidcyclically operated means to effectuate selectively the operation ofsaid advancing means in either direction.

6. A perforator comprising a plurality of punch elements for perforatingcontrol indicia in a strip, a series of punch interponents, a cyclicallyoperated perforating means cooperating with said interponents forperforating said indicia as determined by the operation of saidinterponents, means rotated in timed relation with respect to saidcyclically operated perforating means, means for advancing said strip topresent an unperforated area to said punch elements including a memberengaging said strip, means rotated by the means operated in timedrelation With said cyclically operated means for operating said memberrectilinearly, means for causing said rotated means to operate saidmember in a reverse rectilinear manner to back space said strip, andmeans for facilitating the repeated operation of said member when underthe control of said rotated means.

7. A perforating device comprising a plurality of punch elements forpunching control indicia in a strip, mechanism for advancing said stripas an incident to the punching operation including a member engagingsaid strip, means for facilitating the repeated operation of saidadvancing means, rotary means for positively operating said memberrectilinearly, means to engage said strip and hold it temporarilyagainst displacement during a portion of the rectilinear operation ofsaid member, means to shift said rotary means to cause said member to beoperated in a reverse manner to impart reverse movement to said strip,means for operating said first recited means in a manner to effectrepeated reverse stepwise movement of said strip, and means to limit theoperation of said last recited means.

8. In a perforating device, feed mechanism comprising a member foradvancing a control strip as an incident to the punching operation,means for facilitating the repeated operation of said advancing means,rotary means for positively operating said member rectilinearly, meansto shift said rotary means to cause said member to be operated in areverse manner to impart reverse movement to said strip, means foroperating said first recited means in a manner to eiect repeated reversestepwise movement of said strip, and means to automatically arrest theoperation of said last recited means.

9. A perforating device comprising a pivoted punch head, a plurality ofpunch elements in said punch head for punching control indicia in astrip, means for rendering said pivoted punch head movable along a tapeincluding a unitary member engaging said strip,v rotary means forpositively operating said unitary member reetilinearly, and means tcalter said rotary means to cause said unitary member to be operated in areverse manner to impart reverse movement to said strip.

10. In a perforating device, a pivoted punch head, feed mechanism insaid punch head comprising a unitary member for advancing a controlstrip as an incident to the punching operation, means for facilitatingthe repeated operation of said advancing means, rotary means forpositively operating said unitary .member rectilinearly, means to shiftsaid rotary means to cause said unitary member to be operated in areverse manner to impart reverse movement to said strip, means foroperating said first recited means in a manner to eiect repeated reversestepwise movement of said strip, and means to automatically arrest theoperation of said last recited means.

ROSS A. LAKE.

